Articulated framework for bed or seat

摘要

Slit tubular part (13) of the joint device (5) engages longitudinal member segment (6) belonging to upper leg section of the armature. Slit tubular member (14) engages similarly longitudinal member segment (8) belonging to lower leg section of the armature. The support structure (20) belonging to joint device (5) moves with tubular parts (13, 14) and joint axle (19) when the whole of the joint device is slidingly moved along the longitudinal member (6, 8). The support bars (21 and 22) then slide below intercalar transverse members (11) while supporting them at their ends.